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Custom DOT Brass Fittings

Ningbo QiXing Pneumatic Technology Co., Ltd.

About Us

Ningbo QiXing Pneumatic Technology Co., Ltd. is a powerful enterprise integrating Research and Development, Production, and Trading with a history of 20 years. We are located in Ningbo Zhejiang, on the eastern coast of China. With Convenient transportation and rich resources. We have advanced production equipment and experienced product design and production. In 2003, we began to do research and manufacturing based on pneumatic connectors. After nearly 20 years of development, we have formed many special product lines which mainly consist of BRASS DOT FITTINGS, DOT ferrule connectors, PUSH-IN fittings, and composite fittings. The product is diversified in shape including in-line straight, right-angle, threaded, three-way T-type, and ordinary comprehensive series fittings. We also make customized products for our customers from all over the world according to their samples and pictures. Now, QiXing is professional China DOT Copper Connector Manufacturers and Custom DOT Brass Fittings Factory. On the other hand, we have advanced technology and strong management. Based on the principles of quality and technological innovation, Improving technology and production continually leads our products to sell well in the US and European markets.
Our company promises that we can offer short production cycles, high quality and reasonable price products, and great service in pre-sales and after-sales.In terms of cooperation, we are based on the principle of meeting customer needs and acting with integrity. We are looking forward to receiving your inquiries soon. We look forward to working with you for a better tomorrow!

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DOT Brass Fittings Industry knowledge

Materials and Manufacturing of DOT Brass Fittings

DOT Brass Fittings is a commonly used pipe fitting, which is made of brass material. Brass is an alloy of copper and zinc, which has good thermal conductivity, electrical conductivity and plasticity, so it is very suitable for manufacturing pipe fittings. DOT Brass Fittings are widely used in gas and liquid transmission systems, especially in the fields of automobiles, industrial machinery, construction and aerospace.
The manufacturing process of DOT Brass Fittings includes multiple steps to ensure its high quality and precise size.
First of all, material selection is the first step in manufacturing DOT Brass Fittings. The main material is brass, whose main components are copper and zinc. Brass has good corrosion resistance and strength and is suitable for various working environments. According to specific application requirements, small amounts of other elements such as lead, tin and aluminum can be added to improve the characteristics and performance of the material.
Forging is one of the key steps in the manufacturing process of DOT Brass Fittings. During the forging process, the heated brass billet is placed on the forging machine and plastically deformed by pressure and impact. Forging can improve the density and strength of the material, and it can also improve the grain structure of the material, improve its corrosion resistance and mechanical properties.
Cold heading is the process of transforming the forged brass billet into a pipe fitting through a series of extrusion and stretching operations. Cold heading can improve the dimensional accuracy and surface quality of the material and ensure the compatibility of DOT Brass Fittings with other pipe fittings. Cold heading can also increase the strength and hardness of the material and improve its durability.
Machining is another important step in the manufacturing process of DOT Brass Fittings. Through machining, the brass billet after cold heading can be precisely cut, drilled, milled and threaded to form the final pipe fitting. The machining process requires high-precision mechanical equipment and tools to ensure that the size and shape of DOT Brass Fittings meet the requirements.
Finally, surface treatment is the last step in the manufacturing process of DOT Brass Fittings. Its purpose is to improve the corrosion resistance and appearance quality of DOT Brass Fittings. Common surface treatment methods include plating, spraying and polishing. Among them, the most common is plating, such as chrome plating, nickel plating and zinc plating, etc. The plating can form a protective film to prevent the brass from chemically reacting with the external environment and extend the service life of the DOT Brass Fittings.

Application fields of DOT Brass Fittings

As a common pipe connector, DOT brass fittings are widely used in various fields. Made of brass material, it has excellent corrosion resistance, high strength and durability.
In the automotive industry, DOT brass fittings are widely used to connect the cylinders, brake systems, fuel systems and air conditioning systems of automobiles. Due to the good corrosion resistance and high strength of brass materials, DOT brass fittings can be used for a long time in harsh working environments. In addition, DOT brass fittings also have excellent sealing performance to ensure the safe and reliable operation of automotive systems.
In the field of industrial machinery, DOT brass fittings are also widely used. They are usually used to connect hydraulic systems, pneumatic systems and cooling systems. Industrial machinery usually needs to work under high pressure and high temperature conditions, and DOT brass fittings have high strength and pressure resistance to meet these stringent requirements. In addition, DOT brass fittings also have good plasticity, and various complex connection methods can be achieved through processing and assembly.
In the field of construction, DOT brass fittings also play an important role. They are usually used to connect water supply pipes and HVAC systems. DOT brass pipe fittings have good sealing properties, which can ensure the safe and reliable operation of the pipeline system. In addition, due to the good corrosion resistance of brass materials, DOT brass pipe fittings can maintain good performance in long-term use, reducing the cost of maintenance and replacement.
In the field of aerospace, DOT brass pipe fittings also play an important role. They are usually used to connect fuel systems, liquid oxygen systems, and air pressure systems. The aerospace field has very strict requirements on the performance of materials, and DOT brass pipe fittings have the characteristics of light weight and high strength, which can meet these requirements. In addition, DOT brass pipe fittings also have good corrosion resistance and sealing properties, ensuring the safe and reliable operation of aerospace systems.